/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:59:05,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:59:05,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:59:05,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:59:05,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:59:05,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:59:05,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:59:05,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:59:05,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:59:05,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:59:05,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:59:05,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:59:05,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:59:05,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:59:05,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:59:05,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:59:05,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:59:05,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:59:05,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:59:05,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:59:05,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:59:05,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:59:05,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:59:05,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:59:05,611 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:59:05,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:59:05,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:59:05,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:59:05,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:59:05,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:59:05,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:59:05,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:59:05,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:59:05,614 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:59:05,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:59:05,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:59:05,615 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:59:05,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:59:05,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:59:05,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:59:05,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:59:05,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:59:05,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:59:05,617 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:59:06,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:59:06,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:59:06,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:59:06,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:59:06,092 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:59:06,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2021-02-23 17:59:06,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d4bb678/8888d3a164634c10b493477fc1342011/FLAGaba51e7ed [2021-02-23 17:59:06,796 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:59:06,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2021-02-23 17:59:06,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d4bb678/8888d3a164634c10b493477fc1342011/FLAGaba51e7ed [2021-02-23 17:59:07,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d4bb678/8888d3a164634c10b493477fc1342011 [2021-02-23 17:59:07,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:59:07,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:59:07,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:59:07,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:59:07,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:59:07,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70994b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07, skipping insertion in model container [2021-02-23 17:59:07,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:59:07,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:59:07,370 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2021-02-23 17:59:07,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:59:07,387 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:59:07,416 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2021-02-23 17:59:07,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:59:07,436 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:59:07,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07 WrapperNode [2021-02-23 17:59:07,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:59:07,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:59:07,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:59:07,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:59:07,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... [2021-02-23 17:59:07,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:59:07,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:59:07,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:59:07,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:59:07,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:59:07,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:59:07,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:59:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:59:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:59:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:59:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:59:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:59:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:59:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:59:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:59:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:59:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:59:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:59:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:59:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:59:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:59:08,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:59:08,355 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 17:59:08,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:59:08 BoogieIcfgContainer [2021-02-23 17:59:08,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:59:08,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:59:08,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:59:08,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:59:08,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:59:07" (1/3) ... [2021-02-23 17:59:08,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bd0fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:59:08, skipping insertion in model container [2021-02-23 17:59:08,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:59:07" (2/3) ... [2021-02-23 17:59:08,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bd0fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:59:08, skipping insertion in model container [2021-02-23 17:59:08,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:59:08" (3/3) ... [2021-02-23 17:59:08,370 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2021-02-23 17:59:08,379 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:59:08,385 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:59:08,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:59:08,447 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:59:08,447 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:59:08,448 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:59:08,448 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:59:08,448 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:59:08,448 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:59:08,448 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:59:08,448 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:59:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2021-02-23 17:59:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-23 17:59:08,495 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:08,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:08,497 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:08,507 INFO L82 PathProgramCache]: Analyzing trace with hash -410987913, now seen corresponding path program 1 times [2021-02-23 17:59:08,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:08,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502986861] [2021-02-23 17:59:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:08,599 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:08,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:08,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:08,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:08,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:08,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:08,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:08,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:08,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:08,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502986861] [2021-02-23 17:59:08,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:08,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:08,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743273739] [2021-02-23 17:59:08,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:08,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:08,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:08,982 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2021-02-23 17:59:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:09,483 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2021-02-23 17:59:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:09,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2021-02-23 17:59:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:09,500 INFO L225 Difference]: With dead ends: 266 [2021-02-23 17:59:09,500 INFO L226 Difference]: Without dead ends: 184 [2021-02-23 17:59:09,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-02-23 17:59:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-02-23 17:59:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-23 17:59:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2021-02-23 17:59:09,607 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 81 [2021-02-23 17:59:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:09,608 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2021-02-23 17:59:09,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2021-02-23 17:59:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-23 17:59:09,612 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:09,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:09,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:59:09,613 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:09,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1499658385, now seen corresponding path program 1 times [2021-02-23 17:59:09,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:09,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906284640] [2021-02-23 17:59:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:09,618 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:09,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:09,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:09,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:09,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:09,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:09,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:09,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:09,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:09,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906284640] [2021-02-23 17:59:09,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:09,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:09,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676999923] [2021-02-23 17:59:09,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:09,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:09,800 INFO L87 Difference]: Start difference. First operand 182 states and 238 transitions. Second operand 4 states. [2021-02-23 17:59:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:10,168 INFO L93 Difference]: Finished difference Result 219 states and 291 transitions. [2021-02-23 17:59:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:10,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-23 17:59:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:10,172 INFO L225 Difference]: With dead ends: 219 [2021-02-23 17:59:10,172 INFO L226 Difference]: Without dead ends: 217 [2021-02-23 17:59:10,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-23 17:59:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 182. [2021-02-23 17:59:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-23 17:59:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 237 transitions. [2021-02-23 17:59:10,215 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 237 transitions. Word has length 82 [2021-02-23 17:59:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:10,215 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 237 transitions. [2021-02-23 17:59:10,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 237 transitions. [2021-02-23 17:59:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-02-23 17:59:10,219 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:10,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:10,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:59:10,219 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:10,220 INFO L82 PathProgramCache]: Analyzing trace with hash 144520521, now seen corresponding path program 1 times [2021-02-23 17:59:10,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:10,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107437254] [2021-02-23 17:59:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:10,223 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:10,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:10,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:10,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:10,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:10,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107437254] [2021-02-23 17:59:10,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:10,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:10,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239130279] [2021-02-23 17:59:10,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:10,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:10,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:10,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:10,392 INFO L87 Difference]: Start difference. First operand 182 states and 237 transitions. Second operand 4 states. [2021-02-23 17:59:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:10,704 INFO L93 Difference]: Finished difference Result 434 states and 597 transitions. [2021-02-23 17:59:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:10,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2021-02-23 17:59:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:10,707 INFO L225 Difference]: With dead ends: 434 [2021-02-23 17:59:10,707 INFO L226 Difference]: Without dead ends: 305 [2021-02-23 17:59:10,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-23 17:59:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2021-02-23 17:59:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-23 17:59:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 408 transitions. [2021-02-23 17:59:10,770 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 408 transitions. Word has length 82 [2021-02-23 17:59:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:10,770 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 408 transitions. [2021-02-23 17:59:10,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 408 transitions. [2021-02-23 17:59:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-23 17:59:10,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:10,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:10,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:59:10,773 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:10,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1463383348, now seen corresponding path program 1 times [2021-02-23 17:59:10,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:10,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989994957] [2021-02-23 17:59:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:10,777 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:10,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:10,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:10,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:10,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:10,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:10,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:10,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989994957] [2021-02-23 17:59:10,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:10,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:10,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97993871] [2021-02-23 17:59:10,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:10,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:10,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:10,953 INFO L87 Difference]: Start difference. First operand 303 states and 408 transitions. Second operand 4 states. [2021-02-23 17:59:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:11,261 INFO L93 Difference]: Finished difference Result 369 states and 504 transitions. [2021-02-23 17:59:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:11,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-23 17:59:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:11,265 INFO L225 Difference]: With dead ends: 369 [2021-02-23 17:59:11,265 INFO L226 Difference]: Without dead ends: 367 [2021-02-23 17:59:11,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-02-23 17:59:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 303. [2021-02-23 17:59:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2021-02-23 17:59:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 406 transitions. [2021-02-23 17:59:11,322 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 406 transitions. Word has length 83 [2021-02-23 17:59:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:11,323 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 406 transitions. [2021-02-23 17:59:11,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 406 transitions. [2021-02-23 17:59:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-23 17:59:11,324 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:11,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:11,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:59:11,325 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:11,326 INFO L82 PathProgramCache]: Analyzing trace with hash 185413163, now seen corresponding path program 1 times [2021-02-23 17:59:11,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:11,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402063366] [2021-02-23 17:59:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:11,328 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:11,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:11,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:11,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:11,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:11,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402063366] [2021-02-23 17:59:11,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:11,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:11,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587095132] [2021-02-23 17:59:11,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:11,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:11,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:11,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:11,403 INFO L87 Difference]: Start difference. First operand 303 states and 406 transitions. Second operand 4 states. [2021-02-23 17:59:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:11,778 INFO L93 Difference]: Finished difference Result 791 states and 1096 transitions. [2021-02-23 17:59:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:11,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-02-23 17:59:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:11,782 INFO L225 Difference]: With dead ends: 791 [2021-02-23 17:59:11,783 INFO L226 Difference]: Without dead ends: 541 [2021-02-23 17:59:11,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-02-23 17:59:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2021-02-23 17:59:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-23 17:59:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 734 transitions. [2021-02-23 17:59:11,884 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 734 transitions. Word has length 83 [2021-02-23 17:59:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:11,884 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 734 transitions. [2021-02-23 17:59:11,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 734 transitions. [2021-02-23 17:59:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 17:59:11,886 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:11,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:11,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:59:11,887 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:11,887 INFO L82 PathProgramCache]: Analyzing trace with hash -338856829, now seen corresponding path program 1 times [2021-02-23 17:59:11,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:11,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827464002] [2021-02-23 17:59:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:11,890 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:11,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:11,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:11,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:11,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:11,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:11,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827464002] [2021-02-23 17:59:12,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:12,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:12,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197434494] [2021-02-23 17:59:12,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:12,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:12,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:12,002 INFO L87 Difference]: Start difference. First operand 539 states and 734 transitions. Second operand 4 states. [2021-02-23 17:59:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:12,394 INFO L93 Difference]: Finished difference Result 659 states and 908 transitions. [2021-02-23 17:59:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:12,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-23 17:59:12,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:12,400 INFO L225 Difference]: With dead ends: 659 [2021-02-23 17:59:12,400 INFO L226 Difference]: Without dead ends: 657 [2021-02-23 17:59:12,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-02-23 17:59:12,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 539. [2021-02-23 17:59:12,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-02-23 17:59:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2021-02-23 17:59:12,493 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 84 [2021-02-23 17:59:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:12,494 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2021-02-23 17:59:12,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2021-02-23 17:59:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-23 17:59:12,495 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:12,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:12,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:59:12,496 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:12,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1453085437, now seen corresponding path program 1 times [2021-02-23 17:59:12,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:12,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450152554] [2021-02-23 17:59:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:12,499 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:12,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:12,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:12,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:12,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:12,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:12,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:12,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:12,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:12,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450152554] [2021-02-23 17:59:12,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:12,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:12,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027692990] [2021-02-23 17:59:12,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:12,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:12,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:12,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:12,605 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 4 states. [2021-02-23 17:59:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:13,022 INFO L93 Difference]: Finished difference Result 1487 states and 2052 transitions. [2021-02-23 17:59:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:13,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2021-02-23 17:59:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:13,029 INFO L225 Difference]: With dead ends: 1487 [2021-02-23 17:59:13,029 INFO L226 Difference]: Without dead ends: 1001 [2021-02-23 17:59:13,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-02-23 17:59:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 999. [2021-02-23 17:59:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-23 17:59:13,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1358 transitions. [2021-02-23 17:59:13,205 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1358 transitions. Word has length 84 [2021-02-23 17:59:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:13,205 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1358 transitions. [2021-02-23 17:59:13,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1358 transitions. [2021-02-23 17:59:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-23 17:59:13,207 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:13,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:13,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:59:13,208 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash 161727264, now seen corresponding path program 1 times [2021-02-23 17:59:13,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:13,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895925938] [2021-02-23 17:59:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:13,211 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:13,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:13,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:13,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:13,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:13,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:13,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:13,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:13,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:13,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:13,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895925938] [2021-02-23 17:59:13,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:13,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:13,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949501497] [2021-02-23 17:59:13,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:13,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:13,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:13,278 INFO L87 Difference]: Start difference. First operand 999 states and 1358 transitions. Second operand 4 states. [2021-02-23 17:59:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:13,880 INFO L93 Difference]: Finished difference Result 1219 states and 1672 transitions. [2021-02-23 17:59:13,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:13,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-23 17:59:13,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:13,888 INFO L225 Difference]: With dead ends: 1219 [2021-02-23 17:59:13,888 INFO L226 Difference]: Without dead ends: 1217 [2021-02-23 17:59:13,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-23 17:59:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 999. [2021-02-23 17:59:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2021-02-23 17:59:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1350 transitions. [2021-02-23 17:59:14,037 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1350 transitions. Word has length 85 [2021-02-23 17:59:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:14,038 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 1350 transitions. [2021-02-23 17:59:14,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1350 transitions. [2021-02-23 17:59:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-23 17:59:14,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:14,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:14,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:59:14,040 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:14,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:14,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2096220639, now seen corresponding path program 1 times [2021-02-23 17:59:14,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:14,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352419021] [2021-02-23 17:59:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:14,043 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:14,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:14,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:14,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:14,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:14,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:14,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:14,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:14,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:14,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352419021] [2021-02-23 17:59:14,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:14,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:14,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174685145] [2021-02-23 17:59:14,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:14,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:14,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:14,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:14,135 INFO L87 Difference]: Start difference. First operand 999 states and 1350 transitions. Second operand 4 states. [2021-02-23 17:59:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:14,751 INFO L93 Difference]: Finished difference Result 2843 states and 3880 transitions. [2021-02-23 17:59:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:14,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2021-02-23 17:59:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:14,761 INFO L225 Difference]: With dead ends: 2843 [2021-02-23 17:59:14,761 INFO L226 Difference]: Without dead ends: 1897 [2021-02-23 17:59:14,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2021-02-23 17:59:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1895. [2021-02-23 17:59:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-23 17:59:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2550 transitions. [2021-02-23 17:59:15,036 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2550 transitions. Word has length 85 [2021-02-23 17:59:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:15,037 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2550 transitions. [2021-02-23 17:59:15,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2550 transitions. [2021-02-23 17:59:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-23 17:59:15,039 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:15,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:15,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:59:15,040 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1500034665, now seen corresponding path program 1 times [2021-02-23 17:59:15,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:15,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160684213] [2021-02-23 17:59:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:15,043 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:15,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:15,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:15,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:15,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:15,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:15,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:15,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:15,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:15,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:15,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160684213] [2021-02-23 17:59:15,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:15,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:15,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442776124] [2021-02-23 17:59:15,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:15,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:15,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:15,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:15,136 INFO L87 Difference]: Start difference. First operand 1895 states and 2550 transitions. Second operand 4 states. [2021-02-23 17:59:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:15,782 INFO L93 Difference]: Finished difference Result 2299 states and 3112 transitions. [2021-02-23 17:59:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:15,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-23 17:59:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:15,794 INFO L225 Difference]: With dead ends: 2299 [2021-02-23 17:59:15,795 INFO L226 Difference]: Without dead ends: 2297 [2021-02-23 17:59:15,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-02-23 17:59:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1895. [2021-02-23 17:59:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2021-02-23 17:59:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2534 transitions. [2021-02-23 17:59:16,116 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2534 transitions. Word has length 86 [2021-02-23 17:59:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:16,117 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2534 transitions. [2021-02-23 17:59:16,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2534 transitions. [2021-02-23 17:59:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-23 17:59:16,120 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:16,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:16,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:59:16,121 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash 558575793, now seen corresponding path program 1 times [2021-02-23 17:59:16,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:16,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771058887] [2021-02-23 17:59:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:16,124 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:16,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:16,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:16,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:16,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:16,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:16,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:16,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:16,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:16,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771058887] [2021-02-23 17:59:16,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:16,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:16,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304882888] [2021-02-23 17:59:16,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:16,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:16,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:16,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:16,201 INFO L87 Difference]: Start difference. First operand 1895 states and 2534 transitions. Second operand 4 states. [2021-02-23 17:59:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:17,055 INFO L93 Difference]: Finished difference Result 5483 states and 7368 transitions. [2021-02-23 17:59:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:17,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-02-23 17:59:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:17,073 INFO L225 Difference]: With dead ends: 5483 [2021-02-23 17:59:17,074 INFO L226 Difference]: Without dead ends: 3641 [2021-02-23 17:59:17,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:17,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-02-23 17:59:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-02-23 17:59:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-23 17:59:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4822 transitions. [2021-02-23 17:59:17,619 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4822 transitions. Word has length 86 [2021-02-23 17:59:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:17,620 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4822 transitions. [2021-02-23 17:59:17,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:17,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4822 transitions. [2021-02-23 17:59:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 17:59:17,624 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:17,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:17,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:59:17,624 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1475046540, now seen corresponding path program 1 times [2021-02-23 17:59:17,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:17,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14209654] [2021-02-23 17:59:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:17,627 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:17,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:17,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:17,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:17,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:17,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:17,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:17,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:17,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:17,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14209654] [2021-02-23 17:59:17,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:17,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:17,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106413092] [2021-02-23 17:59:17,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:17,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:17,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:17,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:17,692 INFO L87 Difference]: Start difference. First operand 3639 states and 4822 transitions. Second operand 4 states. [2021-02-23 17:59:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:18,904 INFO L93 Difference]: Finished difference Result 4379 states and 5816 transitions. [2021-02-23 17:59:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:18,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-23 17:59:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:18,926 INFO L225 Difference]: With dead ends: 4379 [2021-02-23 17:59:18,926 INFO L226 Difference]: Without dead ends: 4377 [2021-02-23 17:59:18,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2021-02-23 17:59:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3639. [2021-02-23 17:59:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2021-02-23 17:59:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4790 transitions. [2021-02-23 17:59:19,502 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4790 transitions. Word has length 87 [2021-02-23 17:59:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:19,503 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 4790 transitions. [2021-02-23 17:59:19,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4790 transitions. [2021-02-23 17:59:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 17:59:19,506 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:19,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:19,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 17:59:19,507 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:19,508 INFO L82 PathProgramCache]: Analyzing trace with hash 136226195, now seen corresponding path program 1 times [2021-02-23 17:59:19,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:19,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047518155] [2021-02-23 17:59:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:19,510 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:19,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:19,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:19,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:19,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:19,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:19,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:19,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:19,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:19,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047518155] [2021-02-23 17:59:19,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:19,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:19,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471538502] [2021-02-23 17:59:19,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:19,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:19,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:19,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:19,574 INFO L87 Difference]: Start difference. First operand 3639 states and 4790 transitions. Second operand 4 states. [2021-02-23 17:59:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:20,714 INFO L93 Difference]: Finished difference Result 10619 states and 14008 transitions. [2021-02-23 17:59:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:20,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2021-02-23 17:59:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:20,748 INFO L225 Difference]: With dead ends: 10619 [2021-02-23 17:59:20,748 INFO L226 Difference]: Without dead ends: 7033 [2021-02-23 17:59:20,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-02-23 17:59:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 7031. [2021-02-23 17:59:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7031 states. [2021-02-23 17:59:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 9142 transitions. [2021-02-23 17:59:21,667 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 9142 transitions. Word has length 87 [2021-02-23 17:59:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:21,667 INFO L480 AbstractCegarLoop]: Abstraction has 7031 states and 9142 transitions. [2021-02-23 17:59:21,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 9142 transitions. [2021-02-23 17:59:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-23 17:59:21,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:21,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:21,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 17:59:21,674 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:21,675 INFO L82 PathProgramCache]: Analyzing trace with hash -71709083, now seen corresponding path program 1 times [2021-02-23 17:59:21,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:21,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602047098] [2021-02-23 17:59:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:21,678 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:21,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:21,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:21,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:21,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:21,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:21,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:21,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:21,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:21,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602047098] [2021-02-23 17:59:21,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:21,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:21,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3690554] [2021-02-23 17:59:21,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:21,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:21,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:21,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:21,753 INFO L87 Difference]: Start difference. First operand 7031 states and 9142 transitions. Second operand 4 states. [2021-02-23 17:59:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:23,645 INFO L93 Difference]: Finished difference Result 20603 states and 26808 transitions. [2021-02-23 17:59:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:23,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-23 17:59:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:23,700 INFO L225 Difference]: With dead ends: 20603 [2021-02-23 17:59:23,700 INFO L226 Difference]: Without dead ends: 13625 [2021-02-23 17:59:23,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13625 states. [2021-02-23 17:59:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13625 to 13623. [2021-02-23 17:59:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-23 17:59:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17462 transitions. [2021-02-23 17:59:25,627 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17462 transitions. Word has length 88 [2021-02-23 17:59:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:25,628 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17462 transitions. [2021-02-23 17:59:25,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17462 transitions. [2021-02-23 17:59:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-23 17:59:25,639 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:25,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:25,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 17:59:25,640 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash -700414293, now seen corresponding path program 1 times [2021-02-23 17:59:25,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:25,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259230791] [2021-02-23 17:59:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:25,643 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:25,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:25,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:25,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:25,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:25,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:25,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:25,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:25,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:25,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259230791] [2021-02-23 17:59:25,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:25,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:25,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349518027] [2021-02-23 17:59:25,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:25,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:25,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:25,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:25,715 INFO L87 Difference]: Start difference. First operand 13623 states and 17462 transitions. Second operand 4 states. [2021-02-23 17:59:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:27,890 INFO L93 Difference]: Finished difference Result 16187 states and 20664 transitions. [2021-02-23 17:59:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:27,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2021-02-23 17:59:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:27,936 INFO L225 Difference]: With dead ends: 16187 [2021-02-23 17:59:27,937 INFO L226 Difference]: Without dead ends: 16185 [2021-02-23 17:59:27,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-02-23 17:59:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 13623. [2021-02-23 17:59:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-23 17:59:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17334 transitions. [2021-02-23 17:59:29,444 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17334 transitions. Word has length 88 [2021-02-23 17:59:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:29,444 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17334 transitions. [2021-02-23 17:59:29,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17334 transitions. [2021-02-23 17:59:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 17:59:29,453 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:29,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:29,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 17:59:29,454 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1838349256, now seen corresponding path program 1 times [2021-02-23 17:59:29,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:29,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443024105] [2021-02-23 17:59:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:29,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:29,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:29,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:29,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:29,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:29,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:29,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:29,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:29,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:29,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443024105] [2021-02-23 17:59:29,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:29,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:29,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727765245] [2021-02-23 17:59:29,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:29,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:29,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:29,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:29,514 INFO L87 Difference]: Start difference. First operand 13623 states and 17334 transitions. Second operand 4 states. [2021-02-23 17:59:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:31,873 INFO L93 Difference]: Finished difference Result 16059 states and 20280 transitions. [2021-02-23 17:59:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:31,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-23 17:59:31,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:31,912 INFO L225 Difference]: With dead ends: 16059 [2021-02-23 17:59:31,912 INFO L226 Difference]: Without dead ends: 16057 [2021-02-23 17:59:31,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2021-02-23 17:59:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 13623. [2021-02-23 17:59:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2021-02-23 17:59:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 17206 transitions. [2021-02-23 17:59:33,777 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 17206 transitions. Word has length 89 [2021-02-23 17:59:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:33,777 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 17206 transitions. [2021-02-23 17:59:33,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 17206 transitions. [2021-02-23 17:59:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 17:59:33,787 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:33,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:33,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 17:59:33,788 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2072232263, now seen corresponding path program 1 times [2021-02-23 17:59:33,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:33,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525094423] [2021-02-23 17:59:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:33,791 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:33,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:33,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:33,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:33,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:33,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:33,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:33,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:33,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:33,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525094423] [2021-02-23 17:59:33,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:33,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:33,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992935977] [2021-02-23 17:59:33,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:33,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:33,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:33,845 INFO L87 Difference]: Start difference. First operand 13623 states and 17206 transitions. Second operand 4 states. [2021-02-23 17:59:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:36,857 INFO L93 Difference]: Finished difference Result 39995 states and 50488 transitions. [2021-02-23 17:59:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:36,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2021-02-23 17:59:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:36,905 INFO L225 Difference]: With dead ends: 39995 [2021-02-23 17:59:36,905 INFO L226 Difference]: Without dead ends: 26425 [2021-02-23 17:59:36,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2021-02-23 17:59:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 26423. [2021-02-23 17:59:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-23 17:59:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32822 transitions. [2021-02-23 17:59:39,992 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32822 transitions. Word has length 89 [2021-02-23 17:59:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:39,992 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32822 transitions. [2021-02-23 17:59:39,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32822 transitions. [2021-02-23 17:59:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 17:59:40,007 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:40,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:40,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 17:59:40,008 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1064358977, now seen corresponding path program 1 times [2021-02-23 17:59:40,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:40,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458548690] [2021-02-23 17:59:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:40,010 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:40,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:40,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:40,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:40,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:40,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:40,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:40,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:40,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:40,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458548690] [2021-02-23 17:59:40,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:40,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:40,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933420251] [2021-02-23 17:59:40,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:40,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:40,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:40,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:40,066 INFO L87 Difference]: Start difference. First operand 26423 states and 32822 transitions. Second operand 4 states. [2021-02-23 17:59:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:43,937 INFO L93 Difference]: Finished difference Result 30779 states and 37688 transitions. [2021-02-23 17:59:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:43,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-23 17:59:43,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:43,974 INFO L225 Difference]: With dead ends: 30779 [2021-02-23 17:59:43,974 INFO L226 Difference]: Without dead ends: 30777 [2021-02-23 17:59:43,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2021-02-23 17:59:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 26423. [2021-02-23 17:59:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-23 17:59:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 32566 transitions. [2021-02-23 17:59:47,237 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 32566 transitions. Word has length 90 [2021-02-23 17:59:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:47,237 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 32566 transitions. [2021-02-23 17:59:47,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 32566 transitions. [2021-02-23 17:59:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 17:59:47,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:47,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:47,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 17:59:47,252 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash -185062375, now seen corresponding path program 1 times [2021-02-23 17:59:47,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:47,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724069208] [2021-02-23 17:59:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:47,255 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:47,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:47,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:47,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:47,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:47,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:47,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:47,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:47,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:47,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724069208] [2021-02-23 17:59:47,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:47,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:47,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626269612] [2021-02-23 17:59:47,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:47,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:47,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:47,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:47,312 INFO L87 Difference]: Start difference. First operand 26423 states and 32566 transitions. Second operand 4 states. [2021-02-23 17:59:53,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:59:53,472 INFO L93 Difference]: Finished difference Result 77625 states and 95543 transitions. [2021-02-23 17:59:53,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:59:53,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-02-23 17:59:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:59:53,503 INFO L225 Difference]: With dead ends: 77625 [2021-02-23 17:59:53,504 INFO L226 Difference]: Without dead ends: 26423 [2021-02-23 17:59:53,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:59:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26423 states. [2021-02-23 17:59:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26423 to 26423. [2021-02-23 17:59:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26423 states. [2021-02-23 17:59:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 31542 transitions. [2021-02-23 17:59:56,785 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 31542 transitions. Word has length 90 [2021-02-23 17:59:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:59:56,785 INFO L480 AbstractCegarLoop]: Abstraction has 26423 states and 31542 transitions. [2021-02-23 17:59:56,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:59:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 31542 transitions. [2021-02-23 17:59:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-23 17:59:56,799 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:59:56,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:59:56,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 17:59:56,799 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:59:56,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:59:56,800 INFO L82 PathProgramCache]: Analyzing trace with hash -854000612, now seen corresponding path program 1 times [2021-02-23 17:59:56,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:59:56,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404523704] [2021-02-23 17:59:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:59:56,802 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:59:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:56,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:56,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:56,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:56,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:59:56,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:56,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:59:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:59:56,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:59:56,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:59:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:59:56,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404523704] [2021-02-23 17:59:56,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:59:56,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:59:56,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882379922] [2021-02-23 17:59:56,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:59:56,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:59:56,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:59:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:59:56,862 INFO L87 Difference]: Start difference. First operand 26423 states and 31542 transitions. Second operand 4 states. [2021-02-23 18:00:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:00:00,111 INFO L93 Difference]: Finished difference Result 26423 states and 31542 transitions. [2021-02-23 18:00:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:00:00,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2021-02-23 18:00:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:00:00,112 INFO L225 Difference]: With dead ends: 26423 [2021-02-23 18:00:00,112 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:00:00,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:00:00,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:00:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:00:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:00:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:00:00,146 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-02-23 18:00:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:00:00,146 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:00:00,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:00:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:00:00,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:00:00,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 18:00:00,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:00:02,824 WARN L202 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 1085 DAG size of output: 65 [2021-02-23 18:00:13,547 WARN L202 SmtUtils]: Spent 10.71 s on a formula simplification. DAG size of input: 2619 DAG size of output: 31 [2021-02-23 18:00:13,858 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 31 [2021-02-23 18:00:15,733 WARN L202 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 1286 DAG size of output: 65 [2021-02-23 18:00:17,152 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-23 18:00:22,687 WARN L202 SmtUtils]: Spent 5.53 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-23 18:00:24,415 WARN L202 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 1089 DAG size of output: 121 [2021-02-23 18:00:24,721 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 45 [2021-02-23 18:00:31,985 WARN L202 SmtUtils]: Spent 7.26 s on a formula simplification. DAG size of input: 1100 DAG size of output: 581 [2021-02-23 18:00:33,126 WARN L202 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-23 18:00:33,698 WARN L202 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-23 18:00:45,596 WARN L202 SmtUtils]: Spent 11.89 s on a formula simplification. DAG size of input: 2793 DAG size of output: 31 [2021-02-23 18:00:49,819 WARN L202 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 1093 DAG size of output: 321 [2021-02-23 18:00:50,194 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 65 [2021-02-23 18:00:54,151 WARN L202 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 1670 DAG size of output: 53 [2021-02-23 18:00:59,240 WARN L202 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-23 18:01:05,652 WARN L202 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 2233 DAG size of output: 31 [2021-02-23 18:01:19,553 WARN L202 SmtUtils]: Spent 13.90 s on a formula simplification that was a NOOP. DAG size: 1097 [2021-02-23 18:01:23,677 WARN L202 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 1106 DAG size of output: 321 [2021-02-23 18:01:24,333 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 121 [2021-02-23 18:01:25,124 WARN L202 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-23 18:01:25,670 WARN L202 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-23 18:01:26,708 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 1079 DAG size of output: 39 [2021-02-23 18:01:41,298 WARN L202 SmtUtils]: Spent 14.58 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-23 18:01:42,307 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-23 18:01:44,158 WARN L202 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 579 DAG size of output: 321 [2021-02-23 18:01:50,645 WARN L202 SmtUtils]: Spent 6.48 s on a formula simplification. DAG size of input: 2054 DAG size of output: 45 [2021-02-23 18:01:54,225 WARN L202 SmtUtils]: Spent 3.58 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-23 18:01:59,646 WARN L202 SmtUtils]: Spent 5.41 s on a formula simplification. DAG size of input: 2308 DAG size of output: 34 [2021-02-23 18:02:14,046 WARN L202 SmtUtils]: Spent 14.39 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-23 18:02:15,166 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 1083 DAG size of output: 53 [2021-02-23 18:02:25,879 WARN L202 SmtUtils]: Spent 10.71 s on a formula simplification. DAG size of input: 2767 DAG size of output: 31 [2021-02-23 18:02:28,529 WARN L202 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 1118 DAG size of output: 189 [2021-02-23 18:02:29,100 WARN L202 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 628 DAG size of output: 87 [2021-02-23 18:02:29,809 WARN L202 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-23 18:02:31,230 WARN L202 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1087 DAG size of output: 85 [2021-02-23 18:02:35,206 WARN L202 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 1847 DAG size of output: 31 [2021-02-23 18:02:35,490 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 565 DAG size of output: 39 [2021-02-23 18:02:51,213 WARN L202 SmtUtils]: Spent 15.72 s on a formula simplification. DAG size of input: 2822 DAG size of output: 39 [2021-02-23 18:02:53,158 WARN L202 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-23 18:03:06,670 WARN L202 SmtUtils]: Spent 13.50 s on a formula simplification. DAG size of input: 2815 DAG size of output: 31 [2021-02-23 18:03:09,118 WARN L202 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 1091 DAG size of output: 189 [2021-02-23 18:03:09,452 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 53 [2021-02-23 18:03:11,379 WARN L202 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 1142 DAG size of output: 121 [2021-02-23 18:03:11,922 WARN L202 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 676 DAG size of output: 67 [2021-02-23 18:03:13,271 WARN L202 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 964 DAG size of output: 47 [2021-02-23 18:03:23,742 WARN L202 SmtUtils]: Spent 10.46 s on a formula simplification. DAG size of input: 2717 DAG size of output: 31 [2021-02-23 18:03:31,192 WARN L202 SmtUtils]: Spent 7.44 s on a formula simplification. DAG size of input: 1095 DAG size of output: 581 [2021-02-23 18:03:31,662 WARN L202 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 85 [2021-02-23 18:03:35,487 WARN L202 SmtUtils]: Spent 3.82 s on a formula simplification that was a NOOP. DAG size: 583 [2021-02-23 18:03:50,628 WARN L202 SmtUtils]: Spent 15.13 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-23 18:03:51,744 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 592 DAG size of output: 191 [2021-02-23 18:04:06,960 WARN L202 SmtUtils]: Spent 15.20 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-23 18:04:22,040 WARN L202 SmtUtils]: Spent 15.07 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-23 18:04:36,841 WARN L202 SmtUtils]: Spent 14.79 s on a formula simplification. DAG size of input: 2820 DAG size of output: 31 [2021-02-23 18:04:37,867 WARN L202 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 1076 DAG size of output: 31 [2021-02-23 18:04:38,882 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 577 DAG size of output: 189 [2021-02-23 18:04:40,552 WARN L202 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 1190 DAG size of output: 85 [2021-02-23 18:04:41,285 WARN L202 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 772 DAG size of output: 55 [2021-02-23 18:04:46,490 WARN L202 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 1540 DAG size of output: 41 [2021-02-23 18:04:47,584 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 1081 DAG size of output: 45 [2021-02-23 18:05:00,968 WARN L202 SmtUtils]: Spent 13.38 s on a formula simplification. DAG size of input: 2807 DAG size of output: 31 [2021-02-23 18:05:04,603 WARN L202 SmtUtils]: Spent 3.63 s on a formula simplification that was a NOOP. DAG size: 581 [2021-02-23 18:05:06,611 WARN L202 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 586 DAG size of output: 323 [2021-02-23 18:05:07,424 WARN L202 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 123 [2021-02-23 18:05:07,916 WARN L202 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-23 18:05:08,388 WARN L202 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-23 18:05:08,547 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2021-02-23 18:05:11,710 WARN L202 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-23 18:05:11,815 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2021-02-23 18:06:31,788 WARN L202 SmtUtils]: Spent 1.33 m on a formula simplification. DAG size of input: 571 DAG size of output: 551 [2021-02-23 18:06:41,266 WARN L202 SmtUtils]: Spent 9.47 s on a formula simplification. DAG size of input: 181 DAG size of output: 161 [2021-02-23 18:06:42,748 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-02-23 18:07:07,753 WARN L202 SmtUtils]: Spent 24.99 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-23 18:07:08,299 WARN L202 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-02-23 18:07:08,540 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2021-02-23 18:11:40,676 WARN L202 SmtUtils]: Spent 4.53 m on a formula simplification. DAG size of input: 1087 DAG size of output: 1067 [2021-02-23 18:12:05,559 WARN L202 SmtUtils]: Spent 24.87 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-23 18:12:08,729 WARN L202 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2021-02-23 18:12:12,277 WARN L202 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2021-02-23 18:12:12,893 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-02-23 18:12:37,216 WARN L202 SmtUtils]: Spent 24.25 s on a formula simplification. DAG size of input: 311 DAG size of output: 291 [2021-02-23 18:12:37,321 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15